Merchant Integration & Technical Support Manager

HeadHunters Hub

Customer Success Manager responsible for technical onboarding and support for merchants in a global payments infrastructure. Involved in payment orchestration and client relationships to enhance merchant experiences.

Posted 5/25/2026contractRemote • 🇧🇬 BulgariaJuniorMid-Level💰 €1,700 - €2,100 per monthWebsite

About the role

Key responsibilities & impact

Configure and integrate new acquirers and payment providers into the payment orchestration environment;
Set up provider credentials, API access, routing logic, and payment methods within the platform;
Create and maintain merchant accounts, ensuring accurate onboarding and production readiness;
Guide merchants through technical go-live processes, including API integration and payment setup validation;
Advise clients on the most suitable integration models, including Host-to-Host (H2H), hosted payment pages, and API-based solutions;
Act as the primary technical contact for merchants after launch, handling integration-related incidents and operational support;
Troubleshoot payment processing issues, webhook failures, routing inconsistencies, tokenisation challenges, and 3DS-related errors;
Collaborate with payment providers and external partners to resolve technical incidents and minimise downtime;
Monitor live integrations and proactively identify anomalies, performance risks, or configuration issues;
Maintain clear technical documentation covering integrations, workflows, recurring issues, and support procedures.

Requirements

What you’ll need

2+ years of experience in payments, FinTech, PSPs, acquiring, payment orchestration, or technical merchant support environments;
Hands-on experience with payment orchestration platforms or similar payment infrastructure solutions is essential;
Understanding of payment infrastructure concepts, including H2H integrations, APIs, hosted payment pages, 3DS, tokenisation, and webhooks;
Ability to read API documentation, test endpoints, inspect payloads, and troubleshoot integration flows;
Strong technical mindset with the ability to understand and investigate payment system behaviours and integration logic;
Experience working directly with merchants or clients in a technical, customer-facing capacity;
Excellent problem-solving and incident management skills in fast-paced operational environments;
Strong communication skills with the ability to explain technical concepts clearly to non-technical stakeholders;
Fluent English, both written and spoken.

Benefits

Comp & perks

Flexible remote working model
Career growth opportunities within integrations, payment operations, or technical account management

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

API integrationpayment orchestrationH2H integrationstokenisationwebhookspayment processingincident managementtechnical documentationtroubleshootingmerchant onboarding

Soft Skills

problem-solvingcommunicationcustomer-facingtechnical mindsetcollaborationguidanceanalytical thinkingadaptabilityattention to detailproactive identification